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rocksdb/util/crc32c_arm64.h

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RocksDB CRC32c optimization with ARMv8 Intrinsic (#5221) Summary: 1. Add Arm linear crc32c implemtation for RocksDB. 2. Arm runtime check for crc32 Pull Request resolved: https://github.com/facebook/rocksdb/pull/5221 Differential Revision: D15013685 Pulled By: siying fbshipit-source-id: 2c2983743d26656d93f212dc7c1a3cf66a1acf12
6 years ago
// Copyright (c) 2018, Arm Limited and affiliates. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#ifndef UTIL_CRC32C_ARM64_H
#define UTIL_CRC32C_ARM64_H
simplify include directive involving inttypes (#5402) Summary: When using `PRIu64` type of printf specifier, current code base does the following: ``` #ifndef __STDC_FORMAT_MACROS #define __STDC_FORMAT_MACROS #endif #include <inttypes.h> ``` However, this can be simplified to ``` #include <cinttypes> ``` as long as flag `-std=c++11` is used. This should solve issues like https://github.com/facebook/rocksdb/issues/5159 Pull Request resolved: https://github.com/facebook/rocksdb/pull/5402 Differential Revision: D15701195 Pulled By: miasantreble fbshipit-source-id: 6dac0a05f52aadb55e9728038599d3d2e4b59d03
5 years ago
#include <cinttypes>
RocksDB CRC32c optimization with ARMv8 Intrinsic (#5221) Summary: 1. Add Arm linear crc32c implemtation for RocksDB. 2. Arm runtime check for crc32 Pull Request resolved: https://github.com/facebook/rocksdb/pull/5221 Differential Revision: D15013685 Pulled By: siying fbshipit-source-id: 2c2983743d26656d93f212dc7c1a3cf66a1acf12
6 years ago
#if defined(__aarch64__) || defined(__AARCH64__)
#ifdef __ARM_FEATURE_CRC32
#define HAVE_ARM64_CRC
#include <arm_acle.h>
extern uint32_t crc32c_arm64(uint32_t crc, unsigned char const *data, unsigned len);
extern uint32_t crc32c_runtime_check(void);
#endif
#endif
#endif